Cu-ni-si based rolled copper alloy and production method thereof
A cu-ni-si, 1. cu-ni-si technology, applied in the field of Cu-Ni-Si series rolled copper alloy, can solve the problem of multivariate, etc., and achieve the effect of excellent electrical conductivity and excellent fatigue properties
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[0051] Electrolytic copper was melted in an atmospheric melting furnace, the additive elements shown in Table 1 were added in predetermined amounts, and the molten metal was stirred. After that, it was taken out of the furnace at a casting temperature of 1200° C. to a casting mold to obtain a copper alloy ingot with the composition shown in Table 1. After the ingot was hot-rolled and face-cut, the first cold rolling, solution treatment, aging treatment, and post-aging cold rolling were sequentially performed to obtain a sample with a plate thickness of 0.2 mm. After post-aging cold rolling, stress relief annealing was performed under the conditions shown in Table 1.
[0052] In addition, hot rolling was performed at 1000° C. for 3 hours, and aging treatment was performed at 400° C. to 550° C. for 1 to 15 hours.
[0053]
[0054] The following items were evaluated about the obtained sample.
[0055] [conductivity]
[0056] For the samples in the vertical direction of rolli...
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